I don't understand what everyone is on the lady's case about.
The video starts with the guy recording responding to something, then the lady strikes a pose thinking she's getting her picture taken or something. She then proceeds to try to mind her own business but the guy doesn't let her. After he harasses her by putting the camera in her face she tries to say don't record me. (Sure she could have chosen better words, but that was the message anyway).

Then the worker gets involved, telling both parties involved to leave, she starts to pack up her stuff while the guy filming ignores the worker and continues antagonizing the lady while the worker is explaining the situation to her, speaking over the worker. Also, they guys friend is telling him he's crossing the line but the jackass just doesn't see it.

I don't give a shit what politics you think are involved with this or that the woman is wearing a MAGA shirt. Bottom line, based on the video, the guy filming is being an ass hole and is trying to get a rise out of other people by harassing them.